documentation: memory-barriers.txt: Correct example for reorderings

Correct the example of memory orderings in memory-barriers.txt

Commit 615cc2c9cf95 "Documentation/memory-barriers.txt: fix important typo re
memory barriers" changed the assignment to x and y. Change the rest of the
example to match this change.

Reported-by: Ganesh Rapolu <ganesh.rapolu@hotmail.com>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index 1073e019ef0617a64dce6061552e48dbba1ee910..f7fa63508abaca685d5c235298047cab3fabbc74 100644 (file)
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -121,22 +121,22 @@ For example, consider the following sequence of events:
 The set of accesses as seen by the memory system in the middle can be arranged
 in 24 different combinations:
 
-       STORE A=3,      STORE B=4,      x=LOAD A->3,    y=LOAD B->4
-       STORE A=3,      STORE B=4,      y=LOAD B->4,    x=LOAD A->3
-       STORE A=3,      x=LOAD A->3,    STORE B=4,      y=LOAD B->4
-       STORE A=3,      x=LOAD A->3,    y=LOAD B->2,    STORE B=4
-       STORE A=3,      y=LOAD B->2,    STORE B=4,      x=LOAD A->3
-       STORE A=3,      y=LOAD B->2,    x=LOAD A->3,    STORE B=4
-       STORE B=4,      STORE A=3,      x=LOAD A->3,    y=LOAD B->4
+       STORE A=3,      STORE B=4,      y=LOAD A->3,    x=LOAD B->4
+       STORE A=3,      STORE B=4,      x=LOAD B->4,    y=LOAD A->3
+       STORE A=3,      y=LOAD A->3,    STORE B=4,      x=LOAD B->4
+       STORE A=3,      y=LOAD A->3,    x=LOAD B->2,    STORE B=4
+       STORE A=3,      x=LOAD B->2,    STORE B=4,      y=LOAD A->3
+       STORE A=3,      x=LOAD B->2,    y=LOAD A->3,    STORE B=4
+       STORE B=4,      STORE A=3,      y=LOAD A->3,    x=LOAD B->4
        STORE B=4, ...
        ...
 
 and can thus result in four different combinations of values:
 
-       x == 1, y == 2
-       x == 1, y == 4
-       x == 3, y == 2
-       x == 3, y == 4
+       x == 2, y == 1
+       x == 2, y == 3
+       x == 4, y == 1
+       x == 4, y == 3
 
 
 Furthermore, the stores committed by a CPU to the memory system may not be